Driving-box wedge device.



r. w, MARTIN.- DRIVING BOX WVEDGE DEVICE.

APPLICATION FILED SEPT. I, ISI]- meisgm.

Ten ysTaTns raTTnT ernten.

FREDERICK W. MARTIN, OF NEW YORK, N.' Y., ASSIGNOR TO FRANKLIN RAILWAY SUPPLY COMPANY, OF WILMINGTON', DELAWARE, A CORPORATION OF DELAWARE.

:DRIVING-BOX WEIDGE DEVICE.

Specification of Letters Patent. l

Application filed September 1, 1917. Serial No. 189,295.

To all whom t may concern:

Be it known that I, FREDERICK W. MARTIN,

of the borough ofjQue'ens, county of Queens,

in the city and State 0f New York, have invented a eertainnew and useful Improvement in Driving-BOX lVedge Devices, of which improvement the following is a specication.

This invention relates to means for taking up wear between the driving boxes and the pedestals of locomotives, and has for its object to provide an improved wedge device for this purpose which shall operate automatically to take up the wear and at the same time allow suilicient freedom of movement between the parts to prevent sticking and permit the usual movements of' the d riving looX relative to the frame.

In the accompanying drawing, IligureA 1 is a side elevation of a pedestal and portion of the frame, with the driving box and wedge device shown in vertical section; F ig. 2 a horizontal section taken on the line 2 2 of Fig. 1; and Fig. 3 a horizontal -section taken on the line 3-3 of Fig. 1.

According to the construction shown the driving box G, having flanges 7 and 8, is mounted between the pedestal jaws 4 and 5. The face of the jaw l is inclined and cooperates with the face of the adjusting Wedge 9, which is pressed upward by theaction of the spring 12. The opposite face of wedge 9 is preferably vertical and cngages one side of the floating plate 10, preferably having parallel vertical sides and located between the, wedge i) and the driving box 6.

The pedestal jaw l at the opposite side of the driving box, is provided with a straight vertical fare and between this jaw and the driving box arc loca-ted the shoe. 15, tapering slightly in the same direction as the wedge 9, and the. floating wedge 14, one face being slightly inclined to correspond with the face of the shoe and the other straight f'ace engaging the. box. The length of' the floating wedge 14, and of the floating plate 10 are such as to allow a slight clearance between said `parts and the frame 17 at the top and the binder 16 at the bottom.

The wedges may be guided by separate strips l1, bolted to the pedestal jaw, as shown inFig. 2, or by integral flanges on the wedge, as indicated in Fig. 3.

The spring 12 acts to force the adjusting wedge 9 upward to automatically take up the wear of the parts and maintain a snug fit of the driving box in the pedestal, but at the same time there will be no tendency for the wedges to stick or interfere with the free vertical movement of the box relative to the frame under the action of the vehicle springs. When there is an upward movement of the driving box the wedge let moves with it and relieves any binding action at the inclined face of the shoe 15. lVhen there is a down-4 ward movement of the box relative to the frame it will carry the floating plate 10 with it to the extent of' the clearance between the lower end of the plate and the hinder. This movement will also be transmitted to the wedge 9, tending to pull the same down slightly or sufficiently to relieve any binding action and prevent sticking.

Having now described my invention what I claim as nen` and desire to secure by Letters Patent, is:

1. The combination with a pedestal jaw having an inclined face, and an adjusting wedge cojierating therewith, of a shoe engaging the pedestal jaw at the opposite side and having an -inclined face toward the driving box.

The combination of an adjusting wedge tapered in one direction at one side of the driving box, a floating wedge tapered in the opposite direction at the other side of the driving box. and a shoe having an incline(v fare engaging .said floating wedge. 'y

'3. 'lhe combination with a pedestal jaw having an inclined face. and an adjusting wedge eoiperaling therewith. of a shoer having an inclined 'face at ihe opposite side of the driving box, and a floating \\'edge between said shoe and the driving box.

4. 'lhe combination of' an adjusting wedge :1nd u. limitingpluto located between n, pedo till jaw and the driving hox ut one side, und u shoe und :L floating` edge located between the other pedestal janv und the lrox nt the other Side.

5. The combination with u pedestnl jew having un inclined Inee :1nd nn upwardly tapered Wedge sind :i llouting plate between lmid l'zxce :und the driving hox, of n shoe engziging the othei pedestil und having :in inellned fece, und u downwardly tnpeied limiting.; wedge between said shoe and the driving box.

ln testimony whereof I have hereunto set in y hand. i

FREDERICK. W. MAR'ltIN. 

